Name

Stem Cells. 9. After a sperm fertilizes an egg, the resulting mass of cells divides until there are about 100 to 150 cells. x 10. Some cells go through a programmed death. x 11. Unspecialized cells are either embryonic or adult. x 12. This event occurs in cells that are damaged beyond repair. x 128 . Cellular Reproduction CHAPTER 9 Unit 2 ... ................
................